The threat

The U.S. searched Iraq for weapons of mass destruction after the 2003 invasion. None were found. Might another rogue regime, such as North Korea, hold smallpox? No such threat has been verified.

The U.S. searched Iraq for weapons of mass destruction after the 2003 invasion. None were found. Might another rogue regime, such as North Korea, hold smallpox? No such threat has been verified. (Carolyn Cole / Los Angeles Times)

The U.S. searched Iraq for weapons of mass destruction after the 2003 invasion. None were found. Might another rogue regime, such as North Korea, hold smallpox? No such threat has been verified.